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i have a app. who have to do a cross table of distance and duration between 10 000 postal code so i have 100 000 000 request to do ...

i had already a code to retrive data from googlemap but it was to slow so we went with the mappoint activeX and it's about the same time...

is their any way to make it faster for the method "Calculate" of the object "Route"

i have try to set some viewing property to false like...
oApp.ItineraryVisible = False
oApp.PaneState = geoPaneNone

Thx
Martin Fortier

You will gain some speed improvements if you...
- Ensure the map is not visible (i.e. minimized) while calculating routes
- Process your routing within the visible extents of the map
- Use either the Night or Road map styles
- Process the postal codes in sorted order
- Perform regular garbage collection of route and waypoint objects
- Re-create the ActiveMap object on every ~100th route calculation
- Temporarily disable window updates to the activemap (WinAPI call)


HTH
Paul

Hi

Thx for the answer, but im new with mappoint and i need some method name or something...

- Ensure the map is not visible (i.e. minimized) while calculating routes
? MapPoint.Application.visible = false ?

- Process your routing within the visible extents of the map
? if the map is invisible why doing this ?

- Use either the Night or Road map styles
? if the map is invisible why doing this ?

- Perform regular garbage collection of route and waypoint objects
? how can i do this ?

- Temporarily disable window updates to the activemap (WinAPI call)
? how can i do this ?

- Ensure the map is not visible (i.e. minimized) while calculating routes
? MapPoint.Application.visible = false ?
That, or MapPoint.Application.WindowState=Minimized

- Process your routing within the visible extents of the map
? if the map is invisible why doing this ?
Even though the map is invisible, it is still executing in windowed memory space. It's internal methods will still post WM_PAINT, WM_SETTEXT, WM_USER etc. messages while executing. Most notably, it will still DRAW items to the map even though it is not currently visible. This is CPU-intensive and thread-intensive.

- Use either the Night or Road map styles
? if the map is invisible why doing this ?
{see #2 above} Reduced colors and reduced map objects (levels of detail)

- Perform regular garbage collection of route and waypoint objects
? how can i do this ?
if you use any variables or references to the ActiveRoute and ActiveMap objects, let them fall out-of-scope or implicitly destroy them and force garbage-collection.
See the MSDN help topic for GC.Collect()

- Temporarily disable window updates to the activemap (WinAPI call)
? how can i do this ?[/quote]
see this post:
http://www.mapforums.com/sitemap/t-7081.html

Thx for the trick

but lockwindow and minimized does not make it faster...
(even try the sendmessage() for minimize)

now it's getting a little faster... i can retreive 100 Distance and drivingtime in 48 Sec

Do you think i could go faster than 100 value in 48 Sec

Thx
Martin Fortier

Hi,

If you have a multiprocessor machine then you could split up the work into a few threads, creating in each thread a mappoint object and do part of it there. be sure not to cross-thread the objects. On a single CPU machine this will not gain any speed, in contrary it will slow down.

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www.mestdagh.biz
MapPoint coding demo
Order MapPoint 2009 with Routing and User Tools Spreadsheet

yes i could do that.

But first , can you tell me if .5 sec for a caculation of driving time and distance
is about the best i could get or i cant make it go faster ?

because i need to change the hole logic behind my code if it's the best i can get...

Thx a lot for all responder

Wilfried: And we have a product that does this

48 seconds for 100 routes sounds good going for a single MapPoint instance on a single thread, although of course it depends a lot on the length of the routes.



Richard

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